Afamily biys airline tickets online. each ticket costs $167. the family buys travel insurance with each ticket that costs $19 per ticket. the web site charges a fee of $16 for the entire purchase. the family is charged a total of $1132. how many tickets did the family buy?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer